I23.6 vs I51.3
I23.6 (Thrombosis of atrium, auricular appendage, and ventricle as current complications following acute myocardial infarction) compared with I51.3 (Intracardiac thrombosis, not elsewhere classified), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. I23.6 carries an Excludes1 note covering I51.3: “thrombosis of atrium, auricular appendage, and ventricle not specified as current complication following acute myocardial infarction (I51.3)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. I51.3 carries an Excludes1 note covering I23.6: “intracardiac thrombosis as current complication following acute myocardial infarction (I23.6)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| I23.6Thrombosis of atrium, auricular appendage, and ventricle as current complications following acute myocardial infarction | I51.3Intracardiac thrombosis, not elsewhere classified | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | I00-I99 — Diseases of the Circulatory System (I00-I99) | I00-I99 — Diseases of the Circulatory System (I00-I99) |
| Definition | Thrombosis of atrium, auricular appendage, and ventricle as current complications following acute myocardial infarction is a billable ICD-10-CM diagnosis code (I23.6). | Intracardiac thrombosis, not elsewhere classified is a billable ICD-10-CM diagnosis code (I51.3). |
| Includes | — | Apical thrombosis (old) Atrial thrombosis (old) Auricular thrombosis (old) Mural thrombosis (old) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources